BCM MCMR-13 M-LOK Compatible Modular Rail | Free Float 13” AR-15 Handguard
Not Yet Rated | Write the First Review SKU: 222-BRA-BCM-MCMR-13-556-BLK
UPC: 813000000000
MFG#: BCM-MCMR-13-556-BLK

The BCM MCMR-13 M-LOK Compatible Modular Rail is designed for AR-15 shooters who demand strength, precision, and lightweight handling. Measuring 13 inches, this free float rail gives you the accessory space you need without weighing down your rifle. Built from 6061-T6 aluminum and finished with Type III hardcoat anodizing, the MCMR-13 is engineered for durability under hard use while maintaining a slim, ergonomic profile.

With M-LOK mounting slots at 3, 6, and 9 o’clock and a full-length Picatinny top rail, the BCM MCMR-13 offers unmatched modularity for optics, grips, lights, and lasers. Add in BCM’s patented 12 o’clock clamp system, and you have a rail that locks tight, resists flex, and maintains perfect alignment.

Key Features of the BCM MCMR-13

• Length: 13” — ideal for AR-15 mid-length builds

• Free Float Design: Improves accuracy by removing pressure from the barrel

• Material: 6061-T6 aluminum for strength and reduced weight

• Finish: Type III hardcoat anodized for corrosion resistance

• Mounting: M-LOK slots at 3, 6, and 9 o’clock plus continuous Picatinny rail at 12 o’clock

• Internal Diameter: 1.3” clearance, suppressor compatible with many setups

• Clamp System: BCM’s patented 12 o’clock clamp distributes stress and ensures rigidity

• Made in the USA: Trusted by military, law enforcement, and civilian shooters worldwide

Why Choose the BCM MCMR-13?

• Precision & Reliability: Free float construction enhances accuracy and consistency.

• Lightweight Strength: Slim ergonomic profile keeps your AR fast and balanced.

• Battle Proven: BCM products are field-tested and trusted in demanding conditions.

• Versatile Mounting: Works with all M-LOK accessories and standard Picatinny optics.

• Suppressor Ready: Internal clearance allows use with many suppressors and blast shields.

Upgrade Your AR-15 with BCM

The BCM MCMR-13 modular rail is the perfect upgrade for shooters who want the latest in free float performance, lightweight construction, and rock-solid accessory mounting. Whether you’re building a competition rifle, a duty gun, or a modern tactical setup, the MCMR-13 delivers the balance of strength and modularity that BCM is known for.

✅ Frequently Asked Questions (FAQ)

Q: What rifles is the BCM MCMR-13 compatible with?
A: The MCMR-13 is designed for AR-15 platforms with mid-length gas systems and standard upper receivers.

Q: Is the BCM MCMR-13 a free float rail?
A: Yes. The MCMR-13 is a free float rail, meaning it mounts at the barrel nut without touching the barrel, which improves accuracy.

Q: What is the internal diameter of the BCM MCMR-13?
A: The MCMR-13 has a 1.3” internal diameter, offering suppressor compatibility with many AR-15 builds.

Q: Does the BCM MCMR-13 use a clamping system?
A: Yes. BCM uses a patented 12 o’clock clamp system that distributes stress evenly, maintains alignment, and provides superior rigidity compared to traditional designs.

Q: How much does the BCM MCMR-13 weigh?
A: The rail is lightweight thanks to 6061-T6 aluminum construction, keeping your rifle balanced without sacrificing durability.

🔗 Order the BCM MCMR-13 M-LOK Rail at Bravo Company USA

When you need a 13” M-LOK AR-15 free float rail built for accuracy, reliability, and modularity, the BCM MCMR-13 is the answer. Shop now at Bravo Company USA and upgrade your rifle with one of the most trusted handguards on the market.